<?php
/**
 * Smarty plugin
 * @package Smarty
 * @subpackage plugins
 */


/**
 * Smarty {html_radios} function plugin
 *
 * File:       function.html_radios.php<br>
 * Type:       function<br>
 * Name:       html_radios<br>
 * Date:       24.Feb.2003<br>
 * Purpose:    Prints out a list of radio input types<br>
 * Input:<br>
 *           - name       (optional) - string default "radio"
 *           - values     (required) - array
 *           - options    (optional) - associative array
 *           - checked    (optional) - array default not set
 *           - separator  (optional) - ie <br> or &nbsp;
 *           - output     (optional) - the output next to each radio button
 *           - assign     (optional) - assign the output as an array to this variable
 * Examples:
 * <pre>
 * {html_radios values=$ids output=$names}
 * {html_radios values=$ids name='box' separator='<br>' output=$names}
 * {html_radios values=$ids checked=$checked separator='<br>' output=$names}
 * </pre>
 * @link http://smarty.php.net/manual/en/language.function.html.radios.php {html_radios}
 *      (Smarty online manual)
 * @author     Christopher Kvarme <christopher.kvarme@flashjab.com>
 * @author credits to Monte Ohrt <monte at ohrt dot com>
 * @version    1.0
 * @param array
 * @param Smarty
 * @return string
 * @uses smarty_function_escape_special_chars()
 */
function smarty_function_html_radios($params, &$smarty)
{
	require_once $smarty->_get_plugin_filepath('shared','escape_special_chars');
	 
	$name = 'radio';
	$values = null;
	$options = null;
	$selected = null;
	$separator = '';
	$labels = true;
	$label_ids = false;
	$output = null;
	$extra = '';

	foreach($params as $_key => $_val) {
		switch($_key) {
			case 'name':
			case 'separator':
				$$_key = (string)$_val;
				break;

			case 'checked':
			case 'selected':
				if(is_array($_val)) {
					$smarty->trigger_error('html_radios: the "' . $_key . '" attribute cannot be an array', E_USER_WARNING);
				} else {
					$selected = (string)$_val;
				}
				break;

			case 'labels':
			case 'label_ids':
				$$_key = (bool)$_val;
				break;

			case 'options':
				$$_key = (array)$_val;
				break;

			case 'values':
			case 'output':
				$$_key = array_values((array)$_val);
				break;

			case 'radios':
				$smarty->trigger_error('html_radios: the use of the "radios" attribute is deprecated, use "options" instead', E_USER_WARNING);
				$options = (array)$_val;
				break;

			case 'assign':
				break;

			default:
				if(!is_array($_val)) {
					$extra .= ' '.$_key.'="'.smarty_function_escape_special_chars($_val).'"';
				} else {
					$smarty->trigger_error("html_radios: extra attribute '$_key' cannot be an array", E_USER_NOTICE);
				}
				break;
		}
	}

	if (!isset($options) && !isset($values))
	return ''; /* raise error here? */

	$_html_result = array();

	if (isset($options)) {

		foreach ($options as $_key=>$_val)
		$_html_result[] = smarty_function_html_radios_output($name, $_key, $_val, $selected, $extra, $separator, $labels, $label_ids);

	} else {

		foreach ($values as $_i=>$_key) {
			$_val = isset($output[$_i]) ? $output[$_i] : '';
			$_html_result[] = smarty_function_html_radios_output($name, $_key, $_val, $selected, $extra, $separator, $labels, $label_ids);
		}

	}

	if(!empty($params['assign'])) {
		$smarty->assign($params['assign'], $_html_result);
	} else {
		return implode("\n",$_html_result);
	}

}

function smarty_function_html_radios_output($name, $value, $output, $selected, $extra, $separator, $labels, $label_ids) {
	$_output = '';
	if ($labels) {
		if($label_ids) {
			$_id = smarty_function_escape_special_chars(preg_replace('![^\w\-\.]!', '_', $name . '_' . $value));
			$_output .= '<label for="' . $_id . '">';
		} else {
			$_output .= '<label>';
		}
	}
	$_output .= '<input type="radio" name="'
	. smarty_function_escape_special_chars($name) . '" value="'
	. smarty_function_escape_special_chars($value) . '"';

	if ($labels && $label_ids) $_output .= ' id="' . $_id . '"';

	if ((string)$value==$selected) {
		$_output .= ' checked="checked"';
	}
	$_output .= $extra . ' />' . $output;
	if ($labels) $_output .= '</label>';
	$_output .=  $separator;

	return $_output;
}

?>
